Machine for forming pulp into vessels of various kinds



(No Model.)

G. M. STEVENS. v V MACHINE FOR FORMING PULP INTO- VBSSELS OF VARIOUSKINDS.

Patented June 23 [nvenon W j v /f UNITED STATES ATENT Orrrcn.

GRENVILLE M. STEVENS, OF PORTLAND, MAINE.

MACHINE FOR FORMING PULP INTO VESSELS OF VARIOUS KINDS.

SPECIFICATION forming part of Letters Patent No. 320,7 20, dated June23, 1885.

Application filed July 9, 1884. (No model.)

To all whom it may concern:

Be it known that I, GRENVILLE M. STEVENS, of Portland, in the county ofCumberland and State of Maine, have invented certain new and usefulImprovements in Machines for Forming Pulp into Vessels of Various Kinds;and I do hereby declare that the following is a full, clear, and exactdescription of the invention, which will enable others skilled in theart to which it appertains to make and use the same, reference being hadto the accompanying drawings, and to letters of reference'markedthereon, which form a part of this specification.

Figure 1 is a top view. tional elevation.

Same letters show like parts.

Myinvention relates to machines for making ware and other such articlesof pulp. It employs centrifugal force for the power by which thedifferent vessels are formed.

Any kind of vessel can be made and formed in my invention.

The former or vessel into which the pulp is introduced determines theshape of the article to be formed.

The principle or mode of operation is this: Pulp in a measured quantity,mixed with the proper amount of water, is introduced into Fig. 2 is aside secthe forming vessel or receptacle while said' vessel is in acondition of rapid revolution on a vertical axis. The pulp is thus, bythe action of centrifugal force, thrown against the inner periphery ofthe cylinder and formed as the said cylinder is f0rmedthat is, into thedesired shape. The water is thrown off through sieves and perforations,as will be hereinafter more especially described, and the pulp thus leftcomparatively dry, compacted, uniformly placed and deposited, and formedinto the vessel sought to be manufactured.

The interior of the forming-vessel (as I shall call it in thisspecification) is furnished, first, with an interior lining of finewire-netting, then with one of a coarser texture, and then with a seriesof upright rods a little distance apart. The cylinder itself isperforated with numerous holes sufficient for the escape of the water.The forming-vessel is surrounded by a conical cylinder with the end ofthe.

smaller diameter at the top. This cylinder has scuppers, through whichthe water escaping from the pulp runs off out of the machine. Theperforated cylinder is furnished on the outside with ears. The cylinderis composed of three curved parts, which, when placed together, form thecylinder.

At the top end of my device is a yoke, H, with an aperture, L. This yokeH fits inside of the cylinder, and is made to fit tightly by rubberrings b.

At E are the upper ends of rods passing down through rings F F F. Theserings have inclined edges to fit against the inclined edges of the ears0 on the outside of the perforated cylinder. The upright rods pass downthrough the rings F, &c., and through the bottom flange, B, of themachine, where they are secured with nuts. The bottom flange supportsthe whole structure.

The outer perforated cylinder is shown at G, and rests in a recess inthe center of the flange B. Next are the rods shown at n. Next is thecoarser sieve. (Shown at K.) Next is the finer sieve. (Shown at K.)

A is the shaft, rigidly connected with the flange 13, so as to impartits rotation thereto.

M are the perforations of the cylinder.

I are arms extending from the lower side of the yoke H to a cap, m. Intothis cap is fitted the rod 19. This rod slides in and out of the sleeveJ. The rod pis held at any position by the screw or other device a".

That part of the yoke H surrounding the aperture L may be made capableof being drawn down into the cylinder G, and its distance from thebottom of the cylinder determines the height or length of the vessel tobe formed in the cylinder.

I is a conical bottom filling the bottom end of the cylinder G. To makeit tight, it rests upon a rubber packing, I).

As shown in the drawings, the device is arranged to make a roving-can;but, as before observed, the shape of the interior of theforming-cylinder can be varied to suit the form of the vessel desired tobe formed.

\Vhen the parts are all put together, and the shaft A caused to revolverapidly, the pulp and water are introduced at L. The revolution ICOspring away from the outside of the formed article, or may be removed.The Walls of the formed vessel can then be placed away to dry andmature. The bottoms are then nailed in in the common way, if the articleis formed without the pulp bottom. It will be seen that great rapidityin the manufacture is thus secured, and uniformity in the character,density, compactness, and thickness of the walls of the vessel made. 7

No pressure is employed to express the water, as in many machines forthe like purpose with mine. The divisions of the cylin der G areindicated by the lines t in the top View, Fig. 1.

It will be understood that the outer cylinder, 0, may be stationary,while the inner cylinder, G, revolves within it and within the rings F,&c. To efiect this, the shaft A is splined onto the bottom of the rod J,as seen at I. In this case the shaft A would turn in its socket in theflange B. WVhen the whole machine, including the outer cylinders,revolves together, avacuum is produced around the cylinder G, that bothaids in drawing the pulp to proper position and aids in its distributionon the sieve, and also draws off the water from the introduced pulp.

WVhat I-claim as my invention, and desire to secure by Letters Patent ofthe United States, 1s-- l. The perforated cylinder G, the rods, andtheinner and outer sieves of different textures, in combination with theconical bottom I, yoke H, aperture L, and rods J and p, and arms I, thesame to be operated as herein set forth.

2. In combination with the inner cylinder, G, and its contained devices,the outer cylinder with scuppers D, and the flange B, as herein setforth.

3. The combination, with the cylinder G, of the movable part of the yokeA, arms I, and rods J and p, to regulate the height of the vessel to beformed, as herein set forth.

In testimony that I claim the foregoing as my own I affix my signaturein presence of two witnesses.

GRENVILLE M. srnvnns.

Witnesses:

WILLIAM HENRY CLIFFORD, JOHN P. KERRIG-AN.

